I attempted to go through a random door in a dungeon (I was exploring various DimDoors dungeons), did not go anywhere, and the game informed me that there was a bug and I should report it. A few seconds later, I clipped through the door and started falling to Limbo, then my game crashed and generated the following report: https://pastebin.com/ByqULqh6

I relaunched my game and everything was fine, though it sent me back to the first pocket dimension in the chain I was visiting. I made my way back to the same area and got this error, but no crash: https://pastebin.com/SM8iAMEW The other door in the same dungeon produced a similar error (after a similar "Generating pocket from..." line with different information). I tried a couple more times with each door and received the same error each time. I was able to return to the last pocket with multiple doors. After trying another door, I got the same sort of error... and then the game teleported me successfully to another dimension. I haven't had the error since.

If it's useful at all, the pocket that had that problem was one of the ones with the crossing chains and two Iron Dimensional Doors in a partially-degraded stone brick hallway-type thing. The pocket that had that problem and then didn't have that problem was the one with seven Iron Dimensional Doors in a wide hallway.

I hope this can help you in some way! I didn't lose any progress or items, so it was more of an annoyance than anything, but I figured I would report it.

I just wanted to add that I really love this mod, I've used it on and off since I discovered it in Tekkit and it's one of my all-time favorites. Thank you for updating the mod and keeping it alive. :-)

I managed to get another crash, similar to the last one, so I figured I would add it: https://pastebin.com/PZV3ZSH0

Since the initial report, I encountered a few more teleportation bugs, but I was usually able to go through the door on a second try. With this crash, I tried that and loaded into the next pocket. As I was exploring the pocket, I got this crash.